"Difficult part first" is the right approach for legacy migration, or any mandated enterprise dev, to surface tricky issues ASAP. MVP is about product market fit, which is a given via mgmt authority in a corp environment.
It still makes sense to start with the core business values then go up with nice to have features.
Compexity comes sometimes from not so important features that could take much longer to migrate. But of course some of these features are why some products are picked over others in the first place, however this requires a case study and more analysis.
Compexity comes sometimes from not so important features that could take much longer to migrate. But of course some of these features are why some products are picked over others in the first place, however this requires a case study and more analysis.